P0562 — System Voltage Low

CAUTIONIs it safe to drive? The car's electrical voltage is running low. Driveable short-term, but a charging problem can leave you stranded — check it soon.

What P0562 means

The computer sees system voltage below normal while running. Usually the charging system (alternator/belt) or a battery/connection problem.

Most likely causes (in order)

Failing alternator or worn belt
Bad battery or loose/corroded terminals
Corroded ground straps
Heavy parasitic draw

Symptoms you might notice

Dim lights
Battery light
Hard starts

What to check first

Load-test the battery and check charging voltage at idle (should be ~13.5-14.5V). Voltage-drop test the battery and ground cables — corrosion is a quiet killer.

Repair cost & difficulty

Parts

$40–400

Labor

0.5–2 hr

Difficulty

DIY-friendly

Related codes

P0563P0606

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